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Chapter 4: Understanding the User Interface
August 1997 Page 4-21
2524UM
Router(config)# access-list 99 ?
deny Specify packets to reject
permit Specify packets to forward
z
Enter the
deny
keyword followed by a question mark (?) to list
additional options:
Router(config)# access-list 99 deny ?
A.B.C.D Address to match
z
Enter the IP address followed by a question mark (?) to list addi-
tional options:
Router(config)# access-list 99 deny 131.108.134.0 ?
A.B.C.D Mask of bits to ignore
<cr>
z
Enter the wildcard mask followed by a question mark (?) to list
further options.
Router(config)# access-list 99 deny 131.108.134.0 0.0.0.255 ?
<cr>
Router(config)#
access-list 99 deny 131.108.134.0 0.0.0.255
Check Command Syntax
The user interface provides error isolation by using a caret symbol (^
as an indicator. The ^ symbol appears at the point in the command
string where you have entered an incorrect command, keyword, or ar-
gument. The error location indicator and interactive help system allow
you to find and correct syntax errors easily.
In this example, context-sensitive help is used to check the syntax for
setting the clock.
Router# clock ?
set Set the time and date
Router#
clock